XML 71 R59.htm IDEA: XBRL DOCUMENT v3.21.2

Debt - Summary of Convertible Debt (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Debt Instrument [Line Items]
Repurchase of convertible senior notes			$ 145,656	$ 194,670
(Gain) loss on extinguishment of debt:
Gain (loss) on extinguishment of debt	$ (931)	$ 6,391	(2,334)	6,391
Convertible senior notes
Debt Instrument [Line Items]
Aggregate principal amount settled	19,147		71,890
Repurchase of convertible senior notes	$ 0		$ 0
Shares of Class C capital stock issued (in shares)	387,431		1,590,151
Total fair value of consideration transferred	$ 54,634		$ 214,406
(Gain) loss on extinguishment of debt:
Consideration allocated to liability component	16,655		59,646
Carrying value of the liability component, net of unamortized debt discount and debt issuance costs	15,724		57,312
Gain (loss) on extinguishment of debt	931		2,334
Consideration allocated to the equity component	37,979		154,760
2023 Notes | Convertible senior notes
Debt Instrument [Line Items]
Aggregate principal amount settled	5,147		6,072
Repurchase of convertible senior notes	$ 0		$ 0
Shares of Class C capital stock issued (in shares)	65,669		77,458
Total fair value of consideration transferred	$ 8,081		$ 9,724
(Gain) loss on extinguishment of debt:
Consideration allocated to liability component	4,807		5,648
Carrying value of the liability component, net of unamortized debt discount and debt issuance costs	4,619		5,437
Gain (loss) on extinguishment of debt	188		211
Consideration allocated to the equity component	3,274		4,076
2024 Notes | Convertible senior notes
Debt Instrument [Line Items]
Aggregate principal amount settled	14,000		64,618
Repurchase of convertible senior notes	$ 0		$ 0
Shares of Class C capital stock issued (in shares)	321,762		1,485,114
Total fair value of consideration transferred	$ 46,553		$ 200,478
(Gain) loss on extinguishment of debt:
Consideration allocated to liability component	11,848		53,115
Carrying value of the liability component, net of unamortized debt discount and debt issuance costs	11,105		51,032
Gain (loss) on extinguishment of debt	743		2,083
Consideration allocated to the equity component	$ 34,705		147,363
2026 Notes | Convertible senior notes
Debt Instrument [Line Items]
Aggregate principal amount settled			1,200
Repurchase of convertible senior notes			$ 0
Shares of Class C capital stock issued (in shares)			27,579
Total fair value of consideration transferred			$ 4,204
(Gain) loss on extinguishment of debt:
Consideration allocated to liability component			883
Carrying value of the liability component, net of unamortized debt discount and debt issuance costs			843
Gain (loss) on extinguishment of debt			40
Consideration allocated to the equity component			$ 3,321
2021 Notes | Convertible senior notes
Debt Instrument [Line Items]
Aggregate principal amount settled		194,670		194,670
Repurchase of convertible senior notes		$ 194,670		$ 194,670
Shares of Class C capital stock issued (in shares)		753,936		753,936
Total fair value of consideration transferred		$ 230,859		$ 230,859
(Gain) loss on extinguishment of debt:
Consideration allocated to liability component		172,886		172,886
Carrying value of the liability component, net of unamortized debt discount and debt issuance costs		179,277		179,277
Gain (loss) on extinguishment of debt		(6,391)		(6,391)
Consideration allocated to the equity component		$ 57,973		$ 57,973

X

- Definition

The number of shares issued in exchange for the original debt being converted in a noncash (or part noncash) transaction. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or payments in the period.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 50
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=123431023&loc=d3e4332-108586

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=123431023&loc=d3e4304-108586

+ Details

Name:	us-gaap_DebtConversionConvertedInstrumentSharesIssued1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The amount of the original debt being converted in a noncash (or part noncash) transaction. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=123431023&loc=d3e4304-108586

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 50
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=123431023&loc=d3e4332-108586

+ Details

Name:	us-gaap_DebtConversionOriginalDebtAmount1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtInstrumentLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 50
-Section 40
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=123467658&loc=d3e12355-112629

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 50
-Section 40
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=123467658&loc=d3e12317-112629

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3602-108585

+ Details

Name:	us-gaap_GainsLossesOnExtinguishmentOfDebt
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- References

No definition available.

+ Details

Name:	us-gaap_GainsLossesOnExtinguishmentOfDebtAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Amount of cash outflow for cost from early extinguishment and prepayment of debt. Includes, but is not limited to, third-party cost, premium paid, and other fee paid to lender directly for debt extinguishment or debt prepayment. Excludes accrued interest.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 15
-Subparagraph (g)
-URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3291-108585

+ Details

Name:	us-gaap_PaymentsOfDebtExtinguishmentCosts
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Carrying Value Liability Component, Net

+ References

No definition available.

+ Details

Name:	z_CarryingValueLiabilityComponentNet
Namespace Prefix:	z_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Consideration Allocated To Equity Component

+ References

No definition available.

+ Details

Name:	z_ConsiderationAllocatedToEquityComponent
Namespace Prefix:	z_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Consideration Allocated To Liability Component

+ References

No definition available.

+ Details

Name:	z_ConsiderationAllocatedToLiabilityComponent
Namespace Prefix:	z_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Convertible Debt, Fair Value Of Consideration Transferred

+ References

No definition available.

+ Details

Name:	z_ConvertibleDebtFairValueOfConsiderationTransferred
Namespace Prefix:	z_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Details

Name:	us-gaap_LongtermDebtTypeAxis=us-gaap_ConvertibleDebtMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_DebtInstrumentAxis=z_ConvertibleSeniorNotesdue20231.50Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_DebtInstrumentAxis=z_ConvertibleSeniorNotesdue20240.75Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_DebtInstrumentAxis=z_ConvertibleSeniorNotesdue20261.375Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_DebtInstrumentAxis=z_ConvertibleSeniorNotesDue202120Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: